@mixin box-center($justify:center,$align:center) {
    display: flex;
    @if($align !=false) {
        align-items: $align;
    }
    @if($justify !=false) {
        justify-content: $justify;
    }
}

@mixin lineHeight($height) {
    height: $height;
    line-height: $height;
}
.flex {
    @include box-center(false,false)
}
.flex-between{
    @include box-center(space-between,center)
}

  